WTWilly Tai

AI Governance & Assurance · live demo

The go-live button that stays dead until every row is proven.

SAP ECC support ends on 31 December 2027, and proving that GL balances, open items and vendor masters landed in S/4HANA complete and unchanged is still done in throwaway spreadsheets that auditors distrust. This demo is the governed alternative. For every load batch, deterministic code runs three tiers of reconciliation: row counts, control totals, and per-record SHA-256 hashes over canonicalised field-level records, with the declared mapping applied in code. The model layer may only locate the differing records and quote both verbatim, a named migration lead dispositions every mismatch, and the go-live gate stays blocked until every wave is signed. Synthetic data · 9 batches, 3,343 records · runs in your browser

blocked · load and reconcile both waves first
·
records hashed at field level
·
mismatches dispositioned
0/2
waves signed off
BLOCKED
go-live gate

Coverage · every row, drawn to scale

100% of rows hashed at field level

Load a wave to hash its batches.

Field shapes follow real SAP structures: SKA1, LFA1, KNA1, BSID/BSIK on the ECC side and ACDOCA, BUT000 on the S/4HANA side, with the vendor-to-Business-Partner conversion taken from SAP's documented simplification list · the "model" here is a deterministic stub, so the run reproduces exactly · amounts are fixed two-decimal strings · mapping FMAP-2026.03 applied in code